The Infineon CY8C20536A-24PVXIT is a dedicated capacitive-sensing controller from the CapSense® family, built around an 8-bit M8C core. The part communicates over I²C and SPI buses, making it straightforward to integrate as a touch-sensing front-end for a host microcontroller in a larger system.
The supply range spans 1.71 V to 5.5 V, which covers both 1.8 V and 3.3 V logic rails as well as traditional 5 V systems. This wide window simplifies power rail selection — you can run it directly off a Li-ion cell through a regulator or off a 3.3 V LDO without needing a separate level shifter for the core.
Package and footprint — 48-BSSOP (SSOP-48)
Housed in a 48-lead BSSOP package with 0.295-inch body width and 7.50 mm body width, the CY8C20536A-24PVXIT uses a standard SSOP-48 footprint. It is a surface-mount part, so it goes through reflow — no through-hole assembly.